I am a budding film maker and I am planing to buy a DSLR camera. I don’t know much about what I should look for in a DSLR camera. All I want is the image quality when shooting in HD. I am looking for a good camera which is not too expensive.

You want one that does well in low light, so it should do well with a high ISO. Most cameras today have a very good video mode. One camera I use often is the Canon 60D. It has manual audio settings so you can adjust the volume of the audio it's recording. It can shoot at 1080p at 30 or 24 fps, 720p at 60 fps, etc. It also has a swivel screen (which is a HUGE factor to why I bought 2).